configs: enable DM_ETH support for LS1046ARDB

Enable DM_ETH on all the defconfigs for the LS1046ARDB board.

Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/configs/ls1046ardb_qspi_spl_defconfig b/configs/ls1046ardb_qspi_spl_defconfig
index 84e0596..e33b641 100644
--- a/configs/ls1046ardb_qspi_spl_defconfig
+++ b/configs/ls1046ardb_qspi_spl_defconfig
@@ -33,6 +33,7 @@
 CONFIG_SYS_OS_BASE=0x40980000
 CONFIG_SPL_WATCHDOG_SUPPORT=y
 CONFIG_CMD_SPL=y
+CONFIG_CMD_DM=y
 CONFIG_CMD_GPT=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
@@ -58,6 +59,8 @@
 # CONFIG_SPI_FLASH_BAR is not set
 # CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
 CONFIG_PHYLIB=y
+CONFIG_DM_ETH=y
+CONFIG_DM_MDIO=y
 CONFIG_PHY_GIGE=y
 CONFIG_E1000=y
 CONFIG_FMAN_ENET=y